XTR has been designed to give XC racers an edge by creating the lightest, strongest fastest components on earth. XTR is the benchmark of off-road cross-country component design.

Shimano XTR M980 Outboard Bottom Bracket is E-type compatible and features cartridge bearings. The Hollowtech II design reduces the number of parts, significantly cuts down weight and increases rigidity. It also allows the bottom bracket bearings to be spaced further apart. This dramatically changes the load on the bearings to increase rigidity and bearing service life.

Hollowtech 2

Includes three 2.5mm spacers

68/73mm

PRODUCT SPECIFICATIONS

Type: Hollowtech 2

Chain Line: 50mm

Shell Width: 73/68mm

Shimano XTR® and Dual Control™ are trademarks and registered trademarks of Shimano American Corporation and Shimano Inc."

Showing Questions 1-3 of 3

Q: Can I use the M980 BB to replace the M970 BB?

A: Yes, these are compatible.

Q: Will this work as a replacement for the ES-30 Octalink spline (68mm shell, 118mm spindle, 50mm chainline)?

A: This bottom bracket will fit your frame but your Octalink cranks will not fit this bottom bracket. You will need to purchase Hollowtech II compatible cranks (compatible with external bb).

Q: I have a RaceFace Dues XC Crank set with a 24mm spindle, is this compatible with this BB? I have a 73mm BB shell and direct mount front derailleur (3x9),